Mustang Bio, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

License, Clinical Trial and Sponsored Research Agreements (City of Hope - Sponsored Research and Clinical Trial Agreements) (Narrative) (Details)

License, Clinical Trial and Sponsored Research Agreements (City of Hope - Sponsored Research and Clinical Trial Agreements) (Narrative) (Details) - USD ($)				1 Months Ended									12 Months Ended
	Sep. 08, 2021	Apr. 01, 2021	Jul. 03, 2017	Nov. 30, 2022	Oct. 31, 2022	Jan. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Nov. 30, 2020	Oct. 31, 2020	Jun. 30, 2020	Feb. 28, 2017	Dec. 31, 2022	Dec. 31, 2021
License, Clinical Trial and Sponsored Research Agreements
Research and development expense													$ 62,475,000	$ 49,864,000
Mayo Clinic [Member]
License, Clinical Trial and Sponsored Research Agreements
Upfront fees paid		$ 800,000
HER2 (MB 103) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Total reimbursement payments made													3,000,000.0
Sponsored Research and Clinical Trial Agreements [Member]
License, Clinical Trial and Sponsored Research Agreements
Research and development expense													6,989,000	6,591,000
Sponsored Research and Clinical Trial Agreements [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Research and development expense													0	0
Sponsored Research and Clinical Trial Agreements [Member] \| Mayo Clinic [Member]
License, Clinical Trial and Sponsored Research Agreements
Milestones payable							$ 2,100,000
Additional milestone payments					$ 100,000
Agreement term							2 years
Research and development expense													968,000	695,000
Sponsored Research and Clinical Trial Agreements [Member] \| CD123 (MB-102) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Upfront fees paid												$ 19,450
Milestones payable												200,000
Contribution per patient												$ 100,000
Agreement term												3 years
Research and development expense													166,000	301,000
Sponsored Research and Clinical Trial Agreements [Member] \| IL13Ra2 (MB-101) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Upfront fees paid										$ 29,000		$ 9,300
Research funding				$ 600,000						300,000
Milestones payable												200,000
Contribution toward patient costs												$ 100,000
Contribution per patient										100,000
Agreement term												3 years
Research and development expense													1,486,000	1,169,000
Annual maintenance fee payable								$ 200,000		200,000
Sponsored Research and Clinical Trial Agreements [Member] \| CS1 (MB-104) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Research and development expense													482,000	608,000
Total reimbursement payments made													1,800,000
Sponsored Research and Clinical Trial Agreements [Member] \| CS1 (MB-104) [Member] \| City of Hope National Medical Center ("COH") [Member] \| Maximum
License, Clinical Trial and Sponsored Research Agreements
Milestones payable											$ 2,400,000
Sponsored Research and Clinical Trial Agreements [Member] \| PSCA (MB-105) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Milestones payable										33,000
Research and development expense													103,000	107,000
Total reimbursement payments made													400,000
Sponsored Research and Clinical Trial Agreements [Member] \| PSCA (MB-105) [Member] \| City of Hope National Medical Center ("COH") [Member] \| Maximum
License, Clinical Trial and Sponsored Research Agreements
Milestones payable										2,300,000
Sponsored Research and Clinical Trial Agreements [Member] \| HER2 (MB 103) [Member] \| City of Hope National Medical Center ("COH") [Member]
License, Clinical Trial and Sponsored Research Agreements
Milestones payable										29,375
Research and development expense													784,000	697,000
Sponsored Research and Clinical Trial Agreements [Member] \| HER2 (MB 103) [Member] \| City of Hope National Medical Center ("COH") [Member] \| Maximum
License, Clinical Trial and Sponsored Research Agreements
Milestones payable										$ 3,000,000.0
Sponsored Research and Clinical Trial Agreements [Member] \| CD20 (MB-106) [Member] \| Fred Hutchinson Cancer Center [Member]
License, Clinical Trial and Sponsored Research Agreements
Milestones payable			$ 5,300,000
Additional milestone payments						$ 2,200,000			$ 1,800,000
Research and development expense													1,987,000	1,979,000
Sponsored Research and Clinical Trial Agreements [Member] \| CD20 (MB-106) [Member] \| Fred Hutchinson Cancer Center [Member] \| Maximum
License, Clinical Trial and Sponsored Research Agreements
Additional milestone payments						$ 9,300,000
Sponsored Research and Clinical Trial Agreements [Member] \| ST. Jude - XSCID [Member] \| St. Jude Children's Research Hospital [Member]
License, Clinical Trial and Sponsored Research Agreements
Research and development expense													508,000	865,000
Sponsored Research and Clinical Trial Agreements [Member] \| RAG1 SCID (MB-110) [Member] \| Leiden University Medical Centre [Member]
License, Clinical Trial and Sponsored Research Agreements
Milestones payable	$ 500,000
Agreement term	5 years
Research and development expense													$ 505,000	$ 170,000